GM Engine & Exhaust Performance EFI | GEN I/GEN II/GEN III/GEN IV Engines |Small Block | Big Block |

Need some HELP!!

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Old Sep 2, 2017 | 01:45 PM
  #41  
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ill unplug it and give it a test drive,
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Old Sep 2, 2017 | 01:47 PM
  #42  
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It could also be thr tps sensor having an issue at throttle tip in.. can you list again what all you have changed for new?
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Old Sep 2, 2017 | 02:13 PM
  #43  
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ok, i just unpluged the maf, and took it for a drive about 10 miles, i wasnt expecting it to kick like a like a donky going into 2nd and 3rd, check engine light never came on, however i pulled a Po102 in the pending codes.i didnt fell the stutter or miss while drive, i did one time when i was at a light.
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Old Sep 2, 2017 | 02:14 PM
  #44  
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New plugs and wires and check coil packs.
New upgraded injectors and tune.
New fuel filter and new pump,
Had the crank relearn done as well with no luck.
Maf sensor has been cleaned several times.
Changed the fuel pressuer regulator and pcv valve as well.


it was happening before all this was done.
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Old Sep 2, 2017 | 02:31 PM
  #45  
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Honestly trying to help with the limited scanning capability over the net is hard. if i had a scan from hptuners it would be alot easier to work it.

Id try replacing tps first then maf. after that its beyond the limited info the hand held is getting you.
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Old Sep 2, 2017 | 02:32 PM
  #46  
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ok i appreciate it man.
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Old Sep 2, 2017 | 08:07 PM
  #47  
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well changed out the tps, drove it for about 2 hrs, it drove great, started heading home and the issues came back...i hate just tossing money at this truck... wish i just had the funds to take it in to get it looked at.
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Old Sep 5, 2017 | 08:15 AM
  #48  
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just a question, would a bad pcm take a tune? just want to rule that out.
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Old Sep 23, 2017 | 05:44 PM
  #49  
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Well I replaced the last 4 of the coil packs that wasn't changed out, and will post back.
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Old Sep 23, 2017 | 07:18 PM
  #50  
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New coil packs didnt do a damn thing, at least now i have piece of mind that thye are new and good. Just wish i new what was going on, haven't changed the MAF yet.
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